505511266163 has 8 divisors (see below), whose sum is σ = 511263595440. Its totient is φ = 499760546560.

The previous prime is 505511266129. The next prime is 505511266171. The reversal of 505511266163 is 361662115505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505511266163 - 2¹⁰ = 505511265139 is a prime.

It is a super-3 number, since 3×505511266163³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505511266163.

It is not an unprimeable number, because it can be changed into a prime (505511266363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234956 + ... + 1032582.

It is an arithmetic number, because the mean of its divisors is an integer number (63907949430).

Almost surely, 2^505511266163 is an apocalyptic number.

505511266163 is a deficient number, since it is larger than the sum of its proper divisors (5752329277).

505511266163 is an equidigital number, since it uses as much as digits as its factorization.

505511266163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804837.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 505511266163 in words is "five hundred five billion, five hundred eleven million, two hundred sixty-six thousand, one hundred sixty-three".